Cam ring for vane pump

Details Cam ring for vane pump Cam ring for vane pump

1982-04-01

1985-01-08

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Seal element between stationary cylinder parts

418152, 418178, 418179, F04C 200, F04C 1500

Patent

active

044925450

ABSTRACT:
In a cam ring of a vane pump having a contoured bore whole wall is constantly and slidingly engaged by the radially outermost ends of vanes during rotation of a rotor, a radially inner part of the cam ring including the wall of the contoured bore is formed of sintered alloy while a radially outer part surrounding the inner part is formed of a material which prevents working fluid from oozing out therethrough. The outer part comprises a moulding of plastics, a die casting or a piece blanked from a steel sheet.

REFERENCES:
patent: 2816702 (1957-12-01), Woodcock
patent: 3130673 (1964-04-01), Finstad
patent: 3601513 (1971-08-01), White
patent: 3622254 (1971-11-01), LeBlanc
patent: 3878880 (1975-04-01), Jones
patent: 4182602 (1980-01-01), Dworak et al.
patent: 4260343 (1981-04-01), Watanabe et al.
Koehring, Roland, Powder Metallurgy Advances, SAE Journal, Feb. 1963, pp. 39-41.
Baumeistes, Standard Handbook for Mechanical Engineers, 1967, New York, McGraw Hill, pp. 6-89, 6-120, 6-121.

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